/*
 * Copyright 2002-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.core.convert;

import org.springframework.lang.Nullable;

/**
 * Exception to be thrown when a suitable converter could not be found
 * in a given conversion service.
 *
 * @author Keith Donald
 * @author Juergen Hoeller
 * @since 3.0
 */
@SuppressWarnings("serial")
public class ConverterNotFoundException extends ConversionException {

    @Nullable
    private final TypeDescriptor sourceType;

    private final TypeDescriptor targetType;


    /**
     * Create a new conversion executor not found exception.
     *
     * @param sourceType the source type requested to convert from
     * @param targetType the target type requested to convert to
     */
    public ConverterNotFoundException(@Nullable TypeDescriptor sourceType, TypeDescriptor targetType) {
        super("No converter found capable of converting from type [" + sourceType + "] to type [" + targetType + "]");
        this.sourceType = sourceType;
        this.targetType = targetType;
    }


    /**
     * Return the source type that was requested to convert from.
     */
    @Nullable
    public TypeDescriptor getSourceType() {
        return this.sourceType;
    }

    /**
     * Return the target type that was requested to convert to.
     */
    public TypeDescriptor getTargetType() {
        return this.targetType;
    }

}
